Let's look at both teams bottom 6
Chicago has what when healthy, Nylander, Dach, Caggiula, Shaw, Smith, Kampf? They put up what 42 goals combined?
Edmontons bottom 6 when healthy is AA, Archibald, Sheahan, Neal, Khaira and Chiasson and they put up 67 goals this year.
Chicago's definitely had the potential but this year Edmonton's put up the numbers. That said, that wasn't on display against eachother this year.
You're ignoring the point that you're responding too, in that the Oilers bottom 6 that you have listed, really don't do much without McDavid, Draisaitl or Nuge. Who are not in the bottom 6. So, essentially, the bottom 6 comparisons are production of guys while playing top 6, vs bottom 6. It does go both ways, as no team has specific top 6 and bottom 6, guys are always moving up and down the depth charts.
So, here is an accurate comparison, using only points scored with the respective teams.
The Oilers bottom 6 you have listed are:
Neal
Athanasiou
Archibald
Sheahan
Khaira
Chiasson
They have combined for 57 team goals, and 103 points. But lets be realistic, Neal didn't get his points in the bottom 6, neither did Chiasson.
Of the 103 combined points from these players, 68 were scored at Even Strength, 30 on the powerplay (Neal 17, Chiasson 13) and 5 Short handed.
Of the 103 points, 65 were scored while one or more of McDavid, Draisaitl or Nugent-Hopkins were on the ice, 38 were scored without.
On the other side, Chicago breaks down like this:
Nylander
Dach
Caggiula
Shaw
Smith
Kampf
They combined for 42 team goals and 101 points.
Of the 101 combined, 89 were scored at even strength, 8 on the powerplay and 4 shorthanded
Of the 101 points, 51 were scored while one or more of Kane, Toews and DeBrincat were on the ice, 50 were scored without.
This clearly shows that Chicagos bottom 6 produce more effectively (49.5% of their points vs 36.9%) as a bottom 6 unit, while also producing 88.1% of their points at even strength vs the oilers 66%
Anyone who has watched the Oilers play, even a handful of games, knows they are a 2 man team, with 2 or 3 support pieces. They do not have depth beyond a Powerplay unit.